Message execution process (Error)

The following table describes the message conditions and bit status for each execution step identified in the timing diagram when an error occurs during execution.

Message execution process when error occurs
Step	Message Description	Bit Status
1	Rung condition goes TRUE. Message execution is enabled.	EN bit is set. All other bits are cleared.
2	Message buffer is acquired.	EW bit is set.
3	Message transmission starts.	EW bit is cleared. ST bit is set.
4	Message transmission times out.	EW and ST bits do not change.
4-6	As rung condition goes FALSE.	EN bit is cleared. ER bit is set.

Message execution processes and timing diagrams

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